West Sussex · Air handling unit cleaning
AHU Cleaning in Chichester
For cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Chichester, one call is all it takes: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Plant that needs cleaning after a refit
- Coils clogged with dust and debris
- Stale or musty smells from the ventilation
AHU cleaning in Chichester, done properly
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. The work covers supply and extract fans, drain trays and filter sections, and the jobs we see most are air handling units with blocked filters and units needing a clean before a new tenant or handover.
Around a town like Chichester, the buildings with ducted ventilation are typically offices, schools, surgeries and care homes. Their supply and extract ducts all gather dust over time, and TR19® Air sets out how to inspect and clean them.
Nothing is signed off by word of mouth: a dated report with pictures of the work, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Location
- Chichester (PO19, PO20, PO18, PO10)
- Wider area
- West Sussex
- Reporting
- Report and pictures after the visit
- Quotes
- Fixed quote, normally within a working day
- When we work
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
What AHU cleaning looks like in Chichester
Food Standards Agency data includes about 20 schools, colleges and universities, about 42 hospitals, care homes and childcare premises and about 8 hotels and B&Bs across Chichester and its immediate surroundings (about a mile and a half). Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Chichester’s nearest hospital, St Richard's Hospital, is about 0.5 miles north-east. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital. About 54 miles out from central London, Chichester is part of the South East area we work across. The visit is fixed around your opening hours, not ours.
If you run an office near Chichester station, its supply ductwork can gather dust for years before anyone looks inside. If you run a surgery, dental practice or care home near Chichester, clean ventilation matters as much to you as to a hospital like St Richard's Hospital (about 0.5 miles north-east).
Chichester is about 27 miles east of Southampton, in West Sussex. Whether your site is in the middle of Chichester or further out, AHU cleaning is available to all kinds of commercial premises, from a single unit to a large public building. 371 places in West Sussex are on our list, large and small. We also work in Portsmouth, about 13 miles from Chichester.
Work in PO19, PO20, PO18 and PO10 follows the same survey, fixed quote and written report as everywhere else we cover. Local streets include St Martin's Square, Market Road and Old Market Avenue, and we cover them all for AHU cleaning. Chichester is on the A27 and A259, which makes it straightforward for our technicians to reach for AHU cleaning. We also cover Portfield (1 mile east), Westhampnett (1 mile north-east), Shopwyke (2 miles east), Maudlin (2 miles north-east) and East Lavant (2 miles north). Further out, we also cover Bognor Regis (5 miles south-east), Selsey (7 miles south), Littlehampton (11 miles east), Emsworth (7 miles west), Rustington (12 miles east) and Storrington (15 miles east). Being one of West Sussex’s larger places, Chichester has a wide mix of commercial premises, and we cover all of them for AHU cleaning.
Around Chichester
Locally, jobs take us to businesses close to Chichester High School For Girls, George and Dragon Inn and Central C of E Junior School and the streets around them. Chichester’s nearest station is Chichester station, about 0.6 miles south. Other landmarks nearby include Novium Museum (within half a mile south) and Chichester Castle (within half a mile east). Green spaces nearby include Stoke Down and Kingley Vale National Nature Reserve.
Staff cleaning versus specialist work
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
What a clean won’t put right
It’s worth knowing the limits before booking:
- Mechanical faults with motors, belts or bearings
- Ductwork downstream of the unit, which is a separate clean
- Controls and BMS settings that run the unit
If you are not sure, just phone us on 0345 646 2711 or send us an email and we’ll give you a straight answer before you book.
Parts of the system we cover
- Dampers and louvres
- Filter sections
- Internal panels
- Supply and extract fans
- Drain trays
- Heating and cooling coils
Nearby places to Chichester
More services for Chichester
Landlords, agents and facilities managers
Records are where multi-site compliance often slips. Each visit ends with a dated report and photos, so you can show an insurer or inspector what was done at each site.
Multi-site operators often want one contractor and one number. We cover South East England and London, so visits at different addresses can be planned together and kept to a regular schedule.
How it works
Night work is normal for us. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. The more we can see of the system beforehand, the smoother the visit to Chichester will be.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
How to prepare
- Clear the space around the work
- Mention any parking or loading restrictions
- Let us know about permits to work or site inductions
How to get a quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, you get a fixed price before we start.
Related advice
Signs you need AHU cleaning in Chichester
It matters for two reasons: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For the people using the building every day, that’s the air they breathe for hours on end.
What we’re most often called out for:
- Drain trays holding standing water
- Dirty coils holding back the airflow
- Air handling units due a clean after building work
- Plant that has been serviced but not cleaned
If you manage a school such as Lancastrian Infant School, ventilation cleaning is best booked for the holidays.
Before booking anyone
- Exactly which parts of the system are covered
- Whether VAT is included
- Which accreditations they hold, and whether you can check them
- What insurance they carry
Different parts, different methods
Filters
Dirty filters cut airflow and let dirt slip past their frames. The filter section is cleaned so new or cleaned filters sit properly.
Rooftop and plant room units
Ceiling-mounted and compact units are cleaned too. We protect the area below before opening them.
Chichester: your questions answered
Can you come to Chichester after we close?
Yes, nights and weekends are routine for us. The work in Chichester can fit around your hours. When you ring 0345 646 2711 or use the quote form, mention when the site is quiet.
Can ventilation in schools around Chichester be cleaned out of term?
Yes. Half-terms and the summer break are the natural time for school work. With about 20 schools and colleges on the FSA’s register within roughly a mile and a half of Chichester, it pays to plan holiday dates ahead. You can give us a ring on 0345 646 2711, or send details by email with the dates the site is empty.
Is Chichester in your area?
Yes. We work in Chichester and the rest of West Sussex, within our South East and London area. For a fixed quote, call us on 0345 646 2711, or send details by email.
What do you do to protect the area?
We cover floors and nearby surfaces with sheeting before any work starts, and anything we remove is contained. At the end, the area is cleaned down.
Do you need to switch the unit off?
Yes. We cannot clean a running unit, so it’s switched off and made safe first. We agree the timing with your site team.
Which parts of an air handling unit do you clean?
All the internal parts the air touches, from intake to discharge, including coils, fan and drain trays. The photo report shows each section before and after.
How long will the unit be out of action?
It takes anything from half a day for one small unit to several shifts for a plant room full of them. The unit’s size and condition make the biggest difference, and the quote will give you a clear idea.
Do you give a certificate after the clean?
Yes, a TR19® certificate and a photo report. The report also suggests when the unit should next be inspected.
Why act early in Chichester
A light clean now is simpler than a heavy one later. Leave it for years and dirt bakes onto coils and casings, especially where there’s been moisture. With a fire risk assessment or inspection due, getting the work done first puts you on the front foot.
The cost depends on the size of the system, what state it’s in and access to every part of it. We give you a fixed price before any work starts, so there are no surprises.
Why us?
- Evenings, overnight and weekends, plus 24/7 emergency callout
- In business since 2009
- Full insurance on every job
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Read our cost guide and how to check a contractor.